Great Falls, MT weather in June
Great Falls is mild in June, with frequent rain: highs average 73°F and nights drop to about 46°F. There are about 12 days with rain. A great month for outdoor plans.
- Normal high
- 73°F
- Normal low
- 46°F
- Wet days
- 12
- 2.7 in total
- Muggy days
- 0
- dew point 65°F+
How June changes from start to finish
| June 1 | June 30 | |
|---|---|---|
| Normal high | 69°F | 78°F |
| Normal low | 43°F | 48°F |
| Chance of a wet day | 41% | 33% |
| Sunrise / sunset | 5:31 am / 9:14 pm | 5:31 am / 9:26 pm |
| Daylight | 15.7 h | 15.9 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical June day
- 6 am52°Fdew point 44°F
- 9 am61°Fdew point 44°F
- Noon68°Fdew point 43°F
- 3 pm70°Fdew point 42°F
- 6 pm68°Fdew point 43°F
- 9 pm58°Fdew point 44°F
NOAA hourly normals (local standard time) from Great Falls Intl Airport (4 mi away); average wind 10 mph; clear or few clouds in 57% of daytime hours, mostly cloudy or overcast in 32%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F18 of 30
- Hot dayshigh 90°F or more1 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow12 of 30
- Notable rainat least 0.10 in6 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per June, counted from daily records for each year 1991-2020.
Rain and snow in June
Normal precipitation is 2.7 in; a dry June brings about 1.6 in and a wet one about 3.4 in (25th and 75th percentiles). About 2 days bring half an inch or more. Normal snowfall is 0.3 in.
How June varies from year to year
- Warmest June, 1991-20202015: average high 82°F
- Coolest June1998: average high 66°F
- Wettest June2005: 6.8 in
- Driest June2015: 0.4 in
- Highest reading99°F (June 28, 2015)
- Lowest reading31°F (June 8, 2009)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
June compared with May and July
| May | June | July | |
|---|---|---|---|
| Normal high | 65°F | 73°F | 84°F |
| Normal low | 38°F | 46°F | 51°F |
| Wet days | 11 | 12 | 7 |
| Comfortable days | 14 | 18 | 9 |
| Daylight | 15.1 h | 15.9 h | 15.5 h |
Highs change by +8°F from May and +11°F into July.
Nearby alternatives in June
- Cooler: Big Sky, MT153 mi · high 67°F · 14 wet days
How Great Falls ranks in June
- Normal high333rd warmest of 378 cities; 3rd of 6 in Montana
- Wet days298th driest of 378
- Comfortable days36th most of 340
What to pack for Great Falls in June
- Layers – afternoons near 73°F but nights near 46°F
- A rain jacket or umbrella – rain on about 12 days
Heating and cooling
June has 193 heating degree days and 24 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Great Falls in June?
The normal high is 73°F and the normal low is 46°F. From 1991 to 2020 the hottest June reading was 99°F (June 28, 2015).
Does it rain a lot in Great Falls in June?
About 12 days in June have at least 0.01 in of precipitation, and the normal total is 2.7 in. The wettest June in 1991-2020 was in 2005 (6.9 in); the driest was in 2015 (0.4 in).
Does it snow in Great Falls in June?
Yes. Normal snowfall in June is 0.3 in.
Is June a good time to visit Great Falls?
June ranks 1st of 12 months on our comfort score for Great Falls (78 out of 100). It has about 18 comfortable days and about 1 day at 90°F or hotter. The best month is June.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Great Falls Intl Airport (USW00024143), 4.2 mi WSW of the city center, 3,664 ft (335 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Great Falls International Airport (727750-24143), 4.3 mi WSW of the city center, 3,667 ft (338 ft higher than the city). Hourly observations, 1991-2020.